1. Overview & Objective
Next-generation IoT smart devices and body-centric wearables demand high data throughput, low latency, and conformable physical form factors. This project focuses on designing a multi-element (MIMO) antenna printed on flexible dielectric substrates (such as Polyimide / PET) operating at millimeter-wave (mmWave) frequency bands.
2. Design Considerations
- Substrate Conformability: Evaluating return loss ($S_{11}$) stability under physical bending radii ($R = 10\text{ mm}$ to $30\text{ mm}$).
- Mutual Coupling Reduction: Employing defected ground structures (DGS) or decoupling slots to ensure inter-port isolation ($S_{21} < -20\text{ dB}$).
- Diversity Performance: Calculating Envelope Correlation Coefficient (ECC $< 0.005$) and Diversity Gain (DG $\approx 10\text{ dB}$).
3. CST Studio Suite & HFSS Full-Wave Simulations
Using CST Studio Suite’s transient solver and Ansys HFSS Finite Element Method (FEM) solver to cross-verify far-field radiation patterns, gain ($> 5.5\text{ dBi}$), and surface current distributions under flex conditions.
4. Current Progress & Future Milestones
Finalizing array element placement and preparing electromagnetic simulation dataset for fabrication benchmarking.